How do I add a log file path to a vi file to monitor all the changes made to the file?


 
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# 1  
Old 01-15-2020
How do I add a log file path to a vi file to monitor all the changes made to the file?

I'm curious to know how do I add an empty log file (test1.log) to an existing text file to monitor all the changes made to a.txt.
Is this expression
Code:
export PATH=$PATH:/home/test1.log

right to be added to the text file a.txt?

Last edited by RavinderSingh13; 01-15-2020 at 06:26 AM..
# 2  
Old 01-15-2020
Exporting in the environment variable PATH a file name is searching for trouble...

Quote:
how do I add an empty log file (test1.log) to an existing text file to monitor all the changes made to a.txt.
It is unclear to me what you are wanting to achieve, usually you add/use a log file to trace what a program is doing or not... what you seem to be after is more like a history of a file...
# 3  
Old 01-15-2020
Quote:
Originally Posted by TestKing
I'm curious to know how do I add an empty log file (test1.log) to an existing text file to monitor all the changes made to a.txt.
What are you actually planning to log in vi?

Every keystroke while in the editor?

Are you looking for a keystroke logging application?

If so, you might consider logkeys:

Quote:
logkeys is a linux keylogger. It is no more advanced than other available linux keyloggers, notably lkl and uberkey, but is a bit newer, more up to date, it doesn't unreliably repeat keys and it shouldn't crash your X. All in all, it just seems to work. It relies on event interface of the Linux input subsystem. Once completely set, it logs all common character and function keys, while also being fully aware of Shift and AltGr key modifiers.
GitHub - kernc/logkeys: A GNU/Linux keylogger that works!
# 4  
Old 01-15-2020
I think the functionality you are looking for is provided by vim, not by vi Smilie - it would give you the lines where the changes occurred if thats what you are after?

Code:
:set nomore
:redir > c.txt
:changes
:redir END
:set more
:e c.txt

# 5  
Old 01-15-2020
Adding log file

Like the script file...where sometimes it encounters error when executing and so the errors are reported to a log file.... My question is how do I add the directory of the log file to a script file?
# 6  
Old 01-16-2020
you could just configure a logfile within your script.
Code:
LOGFILE=/whatever/you/want/logfile

Alternatively you just run the script with logfile options. For example:
To put output in logfile:
Code:
script > logfile

To put output and errors in logfile:
Code:
script 2>&1 > logfile

To separate:
Code:
script 1> logouput 2> logerror

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